GORHAM — Chins were scratched and brows were furrowed. Fingers hovered over red electric buzzers. And at the end of a daylong test of scientific knowledge at the University of Southern Maine in Gorham, a team of five juniors and seniors from Cape Elizabeth High School beat out nearly 100 other students from across the state to win the Maine Regional Science Bowl. The group will advance to the national competition in Washington, D.C., this spring, the fourth time in eighth years that Cape students will represent the state. “These five kids are real scientists – they really enjoy it,” said Shawn Guerrette, the Cape Elizabeth team adviser. Seniors Sam Price, Mac Huffard, Wesley Parker and Allie Moulton, along with Ryan Collins, a junior and team captain, now will resume their studying in preparation for the national contest, which will be held April 27 to May 1. The team of five was whittled from a pool of 20 interested Cape science students who were also selected by their science teachers.